2004 1.4 FSI Polo misfire + gauges question
I recently bought a 1.4 FSi from 2004, Im in the UK. It has a misfire on cylinder 3, which in turn causes a NOx sensor fault. If I turn the engine off, and clear the codes, the issue is gone. Once the engine is hot and Ive driven for awhile the issues come back. I have had the misfire code on its own, which makes me think it causes the sensor fault.
I changed the coil on cylinder 3 this morning, however the issue came back by the time I got home. I have a few theories, but nothing I can think of would be temporarily caused by cycling the key, and only happens when hot. Does anyone have any idea?
On top of that, since I bought the car it doesnt have the EML on when I cycle the key on ignition. I took the cluster out and discovered you cant change the bulb. My research says that the light may not be wired up in the UK, does anyone know if this is the case? And if not, how do I get the light back on for its MOT next year? Thank you
